Recent content by Razza

Okayy wow.. With this, my equation works out to be: F= -mgy+ Fn 0=-(0.012 kg)*(9.8 m/s squared) +Fn -Fn = -0.1176 N Then to sub it in Fnet = MA Fgravity - Ffriction = MA (9.8 m/s^2)(0.012kg)(sin61) - (0.1176 N) (X) = (0.012kg)(15.24m/s^2) (as long as velocity is two times...

Thank you guys, :smile: Haha its right above it how could I have missed. I think that was just because I was doing my own equation at the same time using my variables and that's where it got me lost. Thank you for answering such an obvious question though. :smile:

Okay, hmm, both thetas are 55.9, and both m's are 0.012, are both g's 9.8? Of course, they have to be. Hmm.

I know this is an old thread and I know probably no ones going to see it, but where did the force of friction (2664.5N) come from? Seeing as 9.8*300 doesn't equal that, and 300*0.7 certainly doesnt... :confused:

Oh of course, right. :smile: But okay it is 9.8... Hmmm This is what I found out yesterday, with mine and that's my angle, (I have 7 different angles but that's the first) and that's what I did to find μS, but I actually need μK, does it mean because my angle is an angle where my sinker is...

YESSS It worked! Aww thank you enormously! THANK YOU! :biggrin: :smile: :biggrin: :smile: YAY! I know it seems ridiculously small that I shouldn't get something like this, but thank you. Thats all it was, the units! Thank you so much! :smile:

Ooh, So does that mean... Yes that's it... I'm sure... Thank you, both of you. Soo much :smile: :smile: I just have to find my paper with it written haha I have so much working out here... Let's see if I do this right... :biggrin:

Seconds squared is acceleration right? Um.. Wait.. Conversion.. Umm... 1000 squared is one million.. so... umm, yeah the WAIT I think I've got it... I converted the radius from km to metres... and it gave me 4.068015*10^13, instead of 10*7, which is the 6 more decimals I need.. Oooh...

Konthelion, yes that works! But... I'm still getting to the power of 18, instead of 24. I'm still that million off, and I cannot figure what I'm doing wrong... (Thank you :smile:)

Umm... That I haven't converted something properly? I thought about how I converted g to kg, but that all seems right... Maybe I have the radius of the Earth wrong.. is it meant to ... nah its not meant to be in meters is it? (Thank you by the way :smile:)

Wow. This is really interesting. Sorry AnkhUNC, that I couldn't help. But now I think all my answers are wrong. I posted a thread yesterday called Static Coefficient HELP or something like that, I'm sure its at the bottom of the Introductory Physics section at the moment... but now I'm really...

:rolleyes: Homework Statement I'm trying to figure out the mass of the earth. Homework Equations I know what it actually is, 5.97*10^24 kg, but it's just how to do it that's got me stumped. I know the F = Gm1m2/d squared (or r squared depending what you're taught)...

Haha I asked this exact question, well okay it wasn't exact, but I asked a similar question yesterday. I don't know if this will help, but I learnt: Fn = m*g μS mg cos (angle, so that's 19) = mg sin 19 (Rearrange) μS= sin19/cos19 = tan 19 Do you have a correct answer to match...

Thank you so much, sorry my question and answers were frustrating, thank you for continuing to help me.:shy: :approve::biggrin:

OK yep, sorry, yes I get that now. From there I can go Us = sin 72 degrees / cos 72 degrees = (which is the same as) tan 72 degrees = 3.077 (Static Coefficient). How different is the static coefficient from the kinetic, and how do I then work that out? Wait...because my angle is...